Added system property "liquibase.env" to support multiple instances
running on a single host, keeping a separation of instances by including
an environment name. The LOCKEDBY column when the system property is set
will include the liquibase.env value, separated by a #. e.g.
localhost#server1 (127.0.0.1)
Upgrade maven-javadoc-plugin to its latest version 2.9.1
Merge remote-tracking branch 'origin/master'
Merge branch '3.2.0.b01' of https://github.com/mrswadge/liquibase into mrswadge-3.2.0.b01

Conflicts:
	liquibase-core/src/main/java/liquibase/sqlgenerator/core/LockDatabaseChangeLogGenerator.java
Changed liquibase.env system property to liquibase.hostDescription
Merge branch 'mrswadge-3.2.0.b01'